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Full-Text Articles in Number Theory
Nonic 3-Adic Fields, John W. Jones, David P. Roberts
Nonic 3-Adic Fields, John W. Jones, David P. Roberts
Mathematics Publications
We compute all nonic extensions of Q3 and find that there are 795 of them up to isomorphism. We describe how to compute the associated Galois group of such a field, and also the slopes measuring wild ramification. We present summarizing tables and a sample application to number fields.
An Abc Construction Of Number Fields, David P. Roberts
An Abc Construction Of Number Fields, David P. Roberts
Mathematics Publications
We describe a general three step method for constructing number fields with Lie-type Galois groups and discriminants factoring into powers of specified primes. The first step involves extremal solutions of the matrix equation ABC = I. The second step involves extremal polynomial solutions of the equation A(x) + B(x) + C(x) = 0. The third step involves integer solutions of the generalized Fermat equation axp + byq + czr = 0. We concentrate here on details associated to the third step and give examples where the field discriminants have the form ±2a3b .